If your GM car/truck is a '96-and-later, it incorporates an OBD-II-based PCM, which controls the transmission as well. For engine control, the PCM takes many sensor inputs (O2, TPS, RPM, MAF, MAP ...

General Motors has issued a recall for certain units of the refreshed 2022 Chevy Silverado 1500 pickup truck due to a problem with a faulty ECM.

GM To Reprogram Refreshed 2022 GMC Sierra 1500 Duramax Diesel ECM By Trey Hawkins July 27, 2023 5:05 am 1 Sponsored ...